CVE-2026-47878 PUBLISHED

Unsafe Java deserialization in DefaultExecutionContextSerializer without class allowlist

Assigner: vmware
Reserved: 20.05.2026 Published: 27.08.2026 Updated: 27.08.2026

DefaultExecutionContextSerializer, used by default in Spring Batch's JDBC job repository, passes Base64-decoded bytes directly to ObjectInputStream.readObject() without an ObjectInputFilter that restricts types to a trusted class allowlist. Spring Batch 6.0.0 - 6.0.4 Spring Batch 5.2.6 and earlier

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
CVSS Score: 5.6

Attack Vector	Network	Scope	Unchanged
Attack Complexity	High	Confidentiality Impact	Low
Privileges Required	None	Integrity Impact	Low
User Interaction	None	Availability Impact	Low

CVSS 3.1

Product Status

Vendor	Spring
Product	Spring Batch
Versions	Default: unaffected affected from 6.0.0 to 6.0.4 (incl.) affected from 0 to 5.2.6 (incl.)

References

https://spring.io/security/cve-2026-47878

Problem Types

CWE-502 Deserialization of Untrusted Data CWE

Impacts

DefaultExecutionContextSerializer, used by default in Spring Batch's JDBC job repository, passes Base64-decoded bytes directly to ObjectInputStream.readObject() without an ObjectInputFilter that restricts types to a trusted class allowlist.